Methods We collected 32 cases with lumber intervertebral disc extrusion diagnosed by clinic and examined CT or (and) MRI within 3 months, who underwent percutaneous collagenase chemonucleolysis.

• 方法CT引导下经皮穿刺硬膜外靶位注射胶原酶治疗临床诊为腰椎间盘脱出并经CT和／或MRI检查（3个月内）证实的患者32例。